错误“无法将类型为"int"的值转换为预期的参数类型为"UInt" [英] Error 'cannot convert value of type 'int' to expected argument type 'UInt'

问题描述

在线

var anchor = HKQueryAnchor(fromValue: Int(HKAnchoredObjectQueryNoAnchor))

我收到红旗错误

无法将类型"Int"的值转换为预期的参数类型"Uint"

cannot convert value of type 'Int' to expected argument type 'Uint'

我已经复制粘贴了另一个Xcode项目中的代码，该代码在另一个项目中没有给该行带来任何错误(仅在watchOS上读取心率).

I had copy-pasted the code from another Xcode project, which brought no error for this line in the other project (reading heart rate on watchOS only).

有什么想法吗?

let healthStore = HKHealthStore()

//State of the app - is the workout activated
var workoutActive = false

// define the activity type and location
var workoutSession : HKWorkoutSession?
let heartRateUnit = HKUnit(fromString: "count/min")
var anchor = HKQueryAnchor(fromValue: Int(HKAnchoredObjectQueryNoAnchor))

推荐答案

错误正在告诉您确切的操作.只需更改代码即可:

The error is telling you exactly what you have to do. Just change the code:

var anchor = HKQueryAnchor(fromValue: UInt(HKAnchoredObjectQueryNoAnchor))

您需要将UInt更改为Int，这是HKQueryAnchor所期望的.

You need to change Int for UInt, which is what HKQueryAnchor expects.

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